Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

Preview PDF HTML

TS80C31X2-VLED Fiches technique(PDF) 24 Page - ATMEL Corporation

No de pièce TS80C31X2-VLED
Description  8-bit CMOS Microcontroller ROMless
PDF  42 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  ATMEL [ATMEL Corporation]
Site Internet  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

TS80C31X2-VLED Fiches technique(HTML) 24 Page - ATMEL Corporation

Back Button TS80C31X2-VLED Datasheet HTML 20Page - ATMEL Corporation TS80C31X2-VLED Datasheet HTML 21Page - ATMEL Corporation TS80C31X2-VLED Datasheet HTML 22Page - ATMEL Corporation TS80C31X2-VLED Datasheet HTML 23Page - ATMEL Corporation TS80C31X2-VLED Datasheet HTML 24Page - ATMEL Corporation TS80C31X2-VLED Datasheet HTML 25Page - ATMEL Corporation TS80C31X2-VLED Datasheet HTML 26Page - ATMEL Corporation TS80C31X2-VLED Datasheet HTML 27Page - ATMEL Corporation TS80C31X2-VLED Datasheet HTML 28Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 24 / 42 page
background image
24
Rev. C - 15 January, 2001
TS80C31X2
6.7 ONCETM Mode (ON Chip Emulation)
The ONCE mode facilitates testing and debugging of systems using TS80C31X2 without removing the circuit from
the board. The ONCE mode is invoked by driving certain pins of the TS80C31X2; the following sequence must
be exercised:
q
Pull ALE low while the device is in reset (RST high) and PSEN is high.
q
Hold ALE low as RST is deactivated.
While the TS80C31X2 is in ONCE mode, an emulator or test CPU can be used to drive the circuit Table 26.
shows the status of the port pins during ONCE mode.
Normal operation is restored when normal reset is applied.
Table 12. External Pin Status during ONCE Mode
ALE
PSEN
Port 0
Port 1
Port 2
Port 3
XTAL1/2
Weak pull-up
Weak pull-up
Float
Weak pull-up
Weak pull-up
Weak pull-up
Active



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42


Fiches technique Télécharger

Go To PDF Page


Lien URL



ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Lien vers la fiche technique    |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com